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South African class ME
The class ME No. 1618 was a single 2-6-6-2 Mallet built by North British in 1912. It was an experiment to get a powerful locomotive for branch lines with light rails. It received a superheater and had a relatively low...
General
| Property | South African class MERemove |
|---|---|
| Built | 1912 |
| Manufacturers | North British |
| Wheel arrangement | 2-6-6-2 (Mallet Mogul) |
| Gauge | 1,067 mm (Cape gauge) |
Dimensions and weights
| Property | South African class MERemove |
|---|---|
| Length | 20.30 m |
| Wheelbase | 11.66 m |
| Rigid wheelbase | 2.59 m |
| Total wheelbase | 17.82 m |
| Service weight | 73.3 t |
| Adhesive weight | 60.4 t |
| Axle load | 10.1 t |
| Total weight | 111.5 t |
| Water capacity | 13,639 l |
| Fuel capacity | 6.1 t (coal) |
Boiler
| Property | South African class MERemove |
|---|---|
| Grate area | 2.973 m² |
| Firebox surface | 10.684 m² |
| Tube heating surface | 124.49 m² |
| Evaporative heating surface | 135.174 m² |
| Superheater surface | 32.144 m² |
| Total heating surface | 167.3 m² |
Power plant
| Property | South African class MERemove |
|---|---|
| Driver diameter | 1,073 mm |
| Boiler pressure | 11.7 bar |
| Expansion type | simple expansion |
| Cylinders | four, 381 x 584 mm |
Power
| Property | South African class MERemove |
|---|---|
| Power source | steam |
| Estimated power | 783 kW (1,065 PS) |
| Starting effort | 157.5 kN |
Calculated values
| Property | South African class MERemove |
|---|---|
| Factor of adhesion | 1 : 3.76 |
| Optimal speed | 31 km/h |
| Power-to-weight ratio | 10.7 kW/t |
| Heating Surface Equivalent | 252.9 m² |
| Cylinder volume/HSE | 1 : 1,053.52 |
| Adhesive weight/Total | 1 : 1.21 |
| Tractive force/Heating surface | 1 : 19.65 |
| Grate area/Heating surface | 1 : 56.28 |
| Firebox/Tube surface | 1 : 11.65 |
| Total/Superheater | 1 : 4.21 |
